/**
 * <one line to give the program's name and a brief idea of what it does.>
 * Copyright (C) Aug 12, 2011  Isaias Arellano
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package redclient.util;

import java.lang.reflect.Method;

/**
 *
 * @author Isaias Arellano
 * @file NumberParser.java
 */
public class NumberParser {
    
    /**
     * Parses a string value and returns a primitive wrapper object containing the value
     * 
     * @param value String value to be parsed as a numeric value
     * @param primitiveWrapperClass class to which the value is to be converted, e.g. Long.class, Integer.class, etc.
     * @return Returns a primitive Wrapper object as specified by primitiveWrapperClass or null if value can be parsed
     */
    public synchronized static Number parseNumberValue(String value, Class primitiveWrapperClass )
    {
        if ( Number.class.isAssignableFrom(primitiveWrapperClass) )
        {
            try
            {
                Method method = primitiveWrapperClass.getMethod("valueOf", new Class[]{String.class});
                Number invoke = (Number)method.invoke(null, value);
                return invoke;
            }
            catch(NumberFormatException nfe)
            {
                return null;
            }
            catch(Exception e)
            {
               // This has never got to be reached
            }
        }
        else
        {
            throw new UnsupportedOperationException("Only primitive wrapper classes are allow when parsing a string as a number");
        }
        return null;
    }
}
